The Role of Shell effects in Nuclear Reactions: Multinucleon-Transfer and Ternary Decay

The binding energy of magic nuclei results in an enhanced stability. This "shell-effects" may be taken into account in the computation of the potential landscape, resulting in deep "valleys" along which the evolution of the system is more probable. This thesis will show two examples: the reaction Xe + Pb, in which the stability of the nuclei (neutron shell-closure) in the entrance channel is exploited to improve the possibility of proton transfer from target to projectile in order to explore the region of the closed shell N = 126 and a program of fours different reactions, with the aim of searching evidences of the True Ternary Fission, trying to take advantage of the possibility of a tripartition (exit channel) leading to one or more magic nuclei.